This is a Spektrum Aircraft Telemetry GPS Sensor. The Spektrum GPS Sensor provides critical GPS data, including ground speed, altitude, latitude, longitude, and heading information*. The sensor is simple to use and set up. Simply plug the GPS sensor into a TM1000 module and follow the instructions included with the sensor. Once finished, the telemetry data will be displayed on your telemetry compatible DSM2/DSMX Transmitter, or delivered to your Spektrum STi™ equipped mobile device.